US4250644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand held microfilm reader
Assignee: Topex Inc Palo Alto
•
Filing: 1978-12-11
•
Granted: 1981-02-17
•
Expires: 1998-12-11
Abstract
Abstract A hand held microfilm reader wherein the film is maintained within the reader housing and the controls for positioning the film are easily manipulated by one hand. An optical system provides an intense automatically focused image projected onto a screen for viewing by the user. The light source is a conventional lens end bulb that has been rendered uniformly directional by its having been mounted in pre-aligned relationship with respect to a clip which is configured to be precisely registered with remaining portions of the optical system.
Inventors
- 👤 Johannes K. Jantzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:01
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A method of aligning a lens end bulb having a base and a lens for focusing an output beam with respect to a fixed structure such that the output beam is oriented in a first predetermined relationship relative to the fixed structure, comprising the steps of: providing a clip having a reference portion, and means for engaging the base; rigidly mounting the base to the clip so that the output beam is in a second predetermined relationship with respect to the reference portion of the clip, the clip and bulb defining an assembly; and providing clip indexing means on the fixed structure for engaging the reference portion of the clip such that the output beam is in the first predetermined relationship with respect to the fixed structure when the clip indexing means engages the reference portion of the clip.
Claim 2
Independent Claim
139 words
A method of aligning a lens end bulb having a base and a lens for focusing an output beam with respect to a fixed structure such that the output beam is oriented in a first predetermined relationship relative to the fixed structure, comprising the steps of: providing a clip having a reference portion, and means for engaging the base; rigidly mounting the base to the clip so that the output beam is in a second predetermined relationship with respect to the reference portion of the clip, the clip and bulb defining an assembly; and providing clip indexing means on the fixed structure for engaging the reference portion of the clip such that the output beam is in the first predetermined relationship with respect to the fixed structure when the clip indexing means engages the reference portion of the clip.
Claim 3
Independent Claim
131 words
A method of aligning a lens end bulb having a base and a lens for focusing an output beam with respect to a fixed structure such that the output beam is oriented in a first predetermined relationship relative to the fixed structure, comprising the steps of: providing a clip having a reference portion and means for engaging the base; rigidly mounting the base to the clip so that the output beam is in a second predetermined relationship with respect to the reference portion of the clip, the clip and bulb defining an assembly, the second predetermined relationship being such that the output beam is in the first predetermined relationship with respect to the fixed structure when the reference portion of the clip is engaged by indexing portions on the fixed structure.
Claim 4
Independent Claim
131 words
A method of aligning a lens end bulb having a base and a lens for focusing an output beam with respect to a fixed structure such that the output beam is oriented in a first predetermined relationship relative to the fixed structure, comprising the steps of: providing a clip having a reference portion and means for engaging the base; rigidly mounting the base to the clip so that the output beam is in a second predetermined relationship with respect to the reference portion of the clip, the clip and bulb defining an assembly, the second predetermined relationship being such that the output beam is in the first predetermined relationship with respect to the fixed structure when the reference portion of the clip is engaged by indexing portions on the fixed structure.
Claim 5
Dependent Claim
41 words
The method of claim 1 or 2 wherein the clip is metal and wherein the step of rigidly mounting the base to the clip comprises the step of soldering the base to the clip to provide a mechanical and electrical connection.
Claim 6
Dependent Claim
26 words
The method of claim 1 or 2 wherein the clip is oversized with respect to a dimension of the bulb to facilitate handling of the assembly.
Claim 7
Independent Claim
123 words
A method of aligning a lens end bulb having a base and a lens for focusing an output beam with respect to a fixed structure such that the output beam is oriented in a first predetermined relationship relative to the fixed structure, comprising the steps of: providing an oversized metallic clip having a reference portion; soldering the base to the clip so that the output beam is in a second predetermined relationship with respect to the reference portion, the clip and bulb defining an assembly, the second predetermined relationship being such that the output beam is in the first predetermined relationship with respect to the fixed structure when the reference portion of the clip is engaged by indexing portions on the fixed structure.
Claim 8
Independent Claim
123 words
A method of aligning a lens end bulb having a base and a lens for focusing an output beam with respect to a fixed structure such that the output beam is oriented in a first predetermined relationship relative to the fixed structure, comprising the steps of: providing an oversized metallic clip having a reference portion; soldering the base to the clip so that the output beam is in a second predetermined relationship with respect to the reference portion, the clip and bulb defining an assembly, the second predetermined relationship being such that the output beam is in the first predetermined relationship with respect to the fixed structure when the reference portion of the clip is engaged by indexing portions on the fixed structure.
References Cited (Backward Citations)
US2892274A
Cited
US3027481A
Cited
US3188512A
Cited
US3116480A
Cited
US3319517A
Cited
US3539263A
Cited
US3588240A
Cited
US3756710A
Cited
US4063365A
Cited
US4059351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |